According to commercial aviation safety procedures, passengers are told to adopt a position to brace themselves for impact. Conspiracies about the position being a means of facilitating a quicker death have floated around for years, but experts say it’s a myth.

Daily Mirror
The position is meant to compact the body and protect vitals from injury. The position also facilitates force of a crash to channel into the chair in front of you, instead of through the body. If you don’t believe us, check out “MythBusters.”
12. Will Your Overweight Suitcase Bring Down the Plane?
It’s annoying to get slammed with additional fees for overweight or additional luggage, but the truth of the matter is that a few extra pounds aren’t going to bring the plane down. Planes are designed to transport at least one stowed bag per passenger.

Pop Sugar
In order to maintain this weight balance to have the right center of gravity for takeoff, the airline industry has employed a longtime practice of loading (in some cases, even up to 600 pounds of) sandbags into the cargo hold to even out the weight.